Alexander straus



` ately over l pound strip overalpon the friction duck until .a removable inner inflatable tu `substantially the same ilnrrnn Sterns Parent- @wrong ALEXANDER STRAUS, OF NEW YORK, N. Y.

en sumario Tine.-

SPECIFICATION forming'part of Letters Patent No. 533,251, dated January 29., 1895,

l l Applicationfsled September 13,18%.- Seria1 No.522,897.` (Nc model.) i [i inner tube, deflated and ilattened, is laid di-A rectly upon the sheath strip before the edges' of the latter are folded over; then these edges Ee 1t known that I,

ing in the city of New York, in the county and State of New York, have invented anew and useful Improvement Relating to Wheel-Tires Bicycles and other Vehicles, of which the following is a specilication, reference being had to the accompanying drawings.

he invention relates more particularly to the construction of the india-rubber sheath or protective cover of .pneumatic tires in which be is used; but it is also applicable to the construction of what.' is known as the` hose-pipe tire. y

the inner tube; after which the vulcanization takes place. The inner tube will then be found adherent to the inner Walls of the sheath'. The exterior of the seam, in the iinproved sheath above described, may, if desired,"be iinished up by laying over it before vulcanization as a protection'against injurious wear from .the spokes or from particles of foreign matter that chance to' lodge in the rim vof the wheel.

The above described construction is illustrated in the accompanying drawings, as fol-` lows: A

lFigure lvs'hows a cross section of thestri s of india rubber (o) and friction cloth (b) before their edges are folded over.- Fig. 2 shows the same after being `folded over, strip of friction d when folded over with will form a tube of the required size. This strip is wound upon a drum, and im1nediit I wind a similar strip of friction cloth cut on the bias, the two strips being of dges abutting it panded by the the inner tube (e).

`The above described method of makingl the sheath of a pneumaticwheel-tire is easyof application, and gives a smooth onjts exterior and strength along the seam.

While it the Work on a dru plain that it might the edges accurately abut; the whole in the usual Way vand vulcanize. The abutting edges will thus be made to unite firmly and on the same and the strip of friction duck will forni after which I wrap has all the required m, as above set forth, it is be vulcanized canized straight and then curved around until 'its ends meet and are fastened. Moreover,

is greatly preferred to vulcanize duced at the same time between theseam and structure which ,is I

when the ends alre joined before vulcanization the union is more likely to be secure.

What ie claimed als new is 1. The hereinbefore described. mode of mak- 5 ing a, tubular sheath for ,pneumatic tires,

which consists in folding over the longitudinal edges of the constituent strip until theyr abut, at the same timeintroducing a. piece of friction duck or seme equivalent material into xo the tube beneath the seam, and then Vulcanizing the whole in the dat, substantially as above set forth,

ing a reinforcingstrip of friction duck or some' equivalent material secured to the innerside lof the seam, substantially as set forth.

ALEXANDER STRAUS.

Witnesses:

RoBfr. F. GAYLORD, AERNEST HoPKlNsoN. 

